Add token creation dialog

matrixgw_frontend/src/utils/FormUtils.ts

@@ -0,0 +1,52 @@
+import isCidr from "is-cidr";
+import type { LenConstraint } from "../api/ServerApi";
+
+/**
+ * Check if a constraint was respected or not
+ *
+ * @returns An error message appropriate for the constraint
+ * violation, if any, or undefined otherwise
+ */
+export function checkConstraint(
+  constraint: LenConstraint,
+  value: string | undefined
+): string | undefined {
+  value = value ?? "";
+  if (value.length < constraint.min)
+    return `Please specify at least ${constraint.min} characters!`;
+
+  if (value.length > constraint.max)
+    return `Please specify at least ${constraint.min} characters!`;
+
+  return undefined;
+}
+
+/**
+ * Check if a number constraint was respected or not
+ *
+ * @returns An error message appropriate for the constraint
+ * violation, if any, or undefined otherwise
+ */
+export function checkNumberConstraint(
+  constraint: LenConstraint,
+  value: number
+): string | undefined {
+  value = value ?? "";
+  if (value < constraint.min)
+    return `Value is below accepted minimum (${constraint.min})!`;
+
+  if (value > constraint.max)
+    return `Value is above accepted maximum (${constraint.min})!`;
+
+  return undefined;
+}
+
+/**
+ * Check whether a given IP network address is valid or not
+ *
+ * @param ip The IP network to check
+ * @returns true if the address is valid, false otherwise
+ */
+export function isIPNetworkValid(ip: string): boolean {
+  return isCidr(ip) !== 0;
+}